FVertexDeclarationRHIRef FOpenGLDynamicRHI::RHICreateVertexDeclaration(const FVertexDeclarationElementList& Elements)
{
// Construct a key from the elements.
FOpenGLVertexDeclarationKey Key(Elements);
// Check for a cached vertex declaration.
FVertexDeclarationRHIRef* VertexDeclarationRefPtr = GOpenGLVertexDeclarationCache.Find(Key);
if (VertexDeclarationRefPtr == NULL)
{
// Create and add to the cache if it doesn't exist.
VertexDeclarationRefPtr = &GOpenGLVertexDeclarationCache.Add(Key,new FOpenGLVertexDeclaration(Key.VertexElements));
check(VertexDeclarationRefPtr);
check(IsValidRef(*VertexDeclarationRefPtr));
FShaderCache::LogVertexDeclaration(Elements, *VertexDeclarationRefPtr);
}
// The cached declaration must match the input declaration!
check(VertexDeclarationRefPtr);
check(IsValidRef(*VertexDeclarationRefPtr));
FOpenGLVertexDeclaration* OpenGLVertexDeclaration = (FOpenGLVertexDeclaration*)VertexDeclarationRefPtr->GetReference();
checkSlow(OpenGLVertexDeclaration->VertexElements == Key.VertexElements);
return *VertexDeclarationRefPtr;
}
virtual void ReleaseRHI() override
{
VertexDeclarationRHI.SafeRelease();
}
virtual void ReleaseDynamicRHI()
{
VertexDeclarationRHI.SafeRelease();
}